<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <script>
    function result() {
  let a = prompt('名字')
  let b = prompt('年龄')
  let c = prompt('性别')
}
let money = result() 
document.write(`我的银行卡余额还有${money}元`)
  </script>
</body>
</html>